油膜失稳,Oil-film instability
1)Oil-film instability油膜失稳
1.Experiments were carried out to investigate the oil-film instability fault behaviors, including oil-film whirling and oscillating, on a special-designed test rig for single-span rotor system.在单跨转子实验台上对油膜失稳故障(油膜涡动和油膜振荡)进行实验,分别对发生油膜失稳的转子稳定运行过程和转子升降速过程进行了振动测试·在油膜振荡期间,转子振动的时域波形呈现复杂的多周期性特点,轴心轨迹为扩散的不规则曲线,功率谱与全息谱表现出明显的分频(0 44倍频)特征·转子升降速过程的时频域分析揭示了转子油膜由涡动到振荡的发生发展过程·实验与分析的结果对研究转子油膜失稳故障现象、实现旋转机械的状态监测与预报有重要意义
2.The numerical simulation shows that in the region of low rotational speed where the oil-film instability do not occur, period doubling bifurcation and chaos take place as the cracked shaft stiffness alteration ratio increases, and the whirl amplitude decreases with increasing of the rotational speed until the unsteady and non.通过数值计算表明 ,在油膜失稳转速前 ,随着裂纹轴刚度变化比的增大 ,系统在低转速区域内具有丰富的非线性动力行为 ,出现倍周期分叉及混沌现象 ,涡动振幅随转速升高而减小 ,直到非稳态非线性油膜失稳 。
英文短句/例句
1.The Reliability and Sensitivity Study of Oil Whirl and Whip-rotor/bearing with Stability Problem;转子系统油膜失稳的可靠性与灵敏度分析
2.The Reliability and Sensitivity Analysis on Oil Instability of Jeffcott Rotor Systems;Jeffcott转子系统油膜失稳的可靠性及灵敏度分析
3.Study of Fault Diagnoses of Misalignment of Shaft and Oil Film Unstabilization转子不对中和油膜失稳故障问题的研究
4.The results show that the main emulsifying fuels of the channel come from the unstable emulsification of fuel film on the front edge of the channel.雾化槽的燃油雾化主要来自雾化槽前边沿的油膜失稳雾化。
5.Research on the Technique of Oil Film Instability Fault Diagnosis for the Large Turbine-Generator Unit大型汽轮发电机组油膜失稳故障诊断技术的研究
6.The Nonlinear Analysis on the Mechanism Giving Rise to the Oil Whip Instability of Large High-Speed Rotor;大型高速转子油膜振荡失稳机理非线性分析
7.Wind-induced aerodynamic instability for closed membrane roofs封闭薄膜屋盖的风致气动力失稳分析
8.Destabilized Saltation of A Dished Medal Diaphragm and their Application in passenger Cars.碟形金属膜片失稳跳跃原理在轿车上的应用
9.Study on Dynamic Analysis and Wind-Induced Aerodynamic Instability for Membrane Structures;薄膜结构的动力分析和风致气动力失稳研究
10.A Study of the Relationship between Interfacial Film and Emulsion Stability;油水界面膜与乳状液稳定性关系的研究
11.Wellbore Instability Mechanism and Its Application in Wei12-1 N B Oilfield井壁失稳机理在涠12-1 N B油田中的应用
12.Analysis of Instability Failure of Landfill Along Geosynthetic Interface and Tension of Geomembranes Placed on Landfill Slope;垃圾填埋场沿底部衬垫界面失稳破坏及土工膜拉力研究
13.The analyses of MRI signal change with the reparation using self fascia profunda on abdominal vertebra destabilizing自体深筋膜条修复兔腰椎失稳的磁共振影像计量分析
14.And wellbore instability also influences the perforation and sand production,ect in the reservoir development.井壁失稳还影响固井，油藏开发中的射孔、防砂、采油和油井增产等后序作业的实施。
15.The buckling critical load is calculated with finite difference method.用差分法求解这个方程，得到了连续油管的临界失稳载荷。
16.Nonlinear Dynamics Bifurcation Phenomenon Analysis of Destabilization in Horizontal Oil-Water Two Phase Flow水平油水两相流层状流失稳非线性动力学分岔现象研究
17.Stable characteristic ,with uniform paricle size distribution,can be used as heat stabilizer to impove well cement strength loss under high temperature and pressure.性能稳定,粒径分布均匀,可作为热稳定剂,改善油井水泥高温高压下的强度损失。
18.Feature:Abrasion resistant,stabilized shiny SPVC film;non-corrosive,resistant toacids,oils,moisture,humidity.好的防磨损性，稳定性好，无腐蚀性，防潮湿抗酸性，抗油性，具有光亮的PVC薄膜层。
相关短句/例句
oil film instability油膜失稳
1.The change of bearing №2 and №3 results in heavy load in bearing №2 and light load in bearing №1, and leads tooil film instability of bearing №2 and №1.从而导致2号轴承的动态载荷过大,1号轴承的载荷减轻,进而使得1号轴承的油膜失稳,2号轴承的润滑状态恶化。
3)Film unstability液膜失稳
4)oil-film stabilization油膜稳定
5)film stability油膜稳定性
1.The film pressure perturbation equation of journal bearing with micro-polar lubricants was given, and finite element method was employed to studyfilm stability of herringbone grooved journal bearing with micro-polar lubricants.给出了以微极性流体为润滑剂的径向滑动轴承油膜压强摄动方程 ,并采用有限元法研究螺旋槽径向轴承油膜稳定性 。
2.Through study offilm stability of the modal the first stability limit and the second stability limit were determined and a stable region was divided, which confirmed existence of a upper stable region.通过对该模型的油膜稳定性计算,确定了第一和第二稳定性界限并划分了稳定区,从而证实了弹性支承滑动轴承系统上稳定区的存在;由此,提出一种解决滑动轴承油膜失稳的新方法,使轴承在上稳定区工作,并讨论了扩大上稳定区的具体措施。
3.This paper studies thefilm stability theory of the sliding bearing system with elastic support, analyzes thefilm stability by means of linear method followed by determining the first and second stability limit as well as a stable region, and deals with the concrete measures of improving the stability.研究了弹性支承滑动轴承系统的油膜稳定性理论。
6)film stability油膜稳定性;膜的稳定性
延伸阅读
油膜轴承油分子式：分子量：CAS号：性质：为抗氧防锈型润滑油。具有良好的粘温性能、抗氧化性、防锈性及抗泡沫性等。目前最重要为21号油膜轴承油，适用于轧钢机的动压、静压、动静压油膜轴承，也可用于低速、重负荷大型机械的滑动轴承。以原油经过常减压蒸馏、丙烷脱沥青、深度溶剂精制、溶剂脱蜡及补充精制所得润滑组分，再加入抗氧、防锈、抗泡沫添加剂调制而成。
